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A059123 as a simple table

na(n)
00
11
21
30
42
52
64
76
812
920
1039
1171
12137
13261
14511
15995
161974
173915
187841
1915749
2031835
2164540
22131453
23268498
24550324
251130899
262330381
274813031
289963288
2920665781
3042947715
3189410092
32186447559
33389397778
34814447067
351705775653

[0,1,1,0,2,2,4,6,12,20,39,71,137,261,511,995,1974,
 3915,7841,15749,31835,64540,131453,268498,550324,
 1130899,2330381,4813031,9963288,20665781,42947715,
 89410092,186447559,389397778,814447067,1705775653]